Sanford chief executive Peter Reidie said the lobster quota "did not provide the best return on investment" and proceeds from the sale would be reinvested in the business.
"It will ultimately help improve shareholder value by contributing to the significant investment required over the next five years to meet our primary strategic outcomes," he said.
"These include the growth of our salmon and mussel businesses and sustainable investment in wildcatch operations," he said.
Fiordland Lobster Company is New Zealand's biggest lobster exporter.
Former All Black captain Taine Randell serves on the company's board.
Sanford shares last traded at $4.57, up nine cents, or 2 per cent.